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Diphenhydramine drug test

A 28-year-old male asked:
Dr. John Chiu
Allergy and Immunology 57 years experience
Unlikely: This would not be screened or confused with illegal drugs. However people often get drowsy from this relatively high dose . If you were to fail the te... Read More

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A 49-year-old member asked:
Dr. Michael Sparacino
Family Medicine 37 years experience
No: It shouldn't show up in a home screening test.
A 55-year-old female asked:
Dr. Lynne Weixel
Clinical Psychology 36 years experience
Very doubtful: There's info here: https://en.wikipedia.org/wiki/Diphenhydramine But, I'm concerned too about your relationship. Suspicion is often as harmful as the ... Read More
A male asked:
Dr. Gary-Anthony Lawson-Boucher
Anesthesiology 22 years experience
Antihistamine: benadryl (diphenhydramine) use is DANGEROUS if you intend to drive. Zyrtec, Loratidine etc are safer choices. Best if taken at night time so that you ... Read More
A 21-year-old female asked:
Dr. Alan Wartenberg
A Verified Doctoranswered
Addiction Medicine 49 years experience
"tca"????: did you mean THC (marijuana or cannabis)? TCA medically usually means tricyclic antidepressant, and these are actually chemically similar to benadryl... Read More
A male asked:
Dr. John Chiu
Allergy and Immunology 57 years experience
Not from either: Neither of these components is going to cause a positive PCP test.
A 27-year-old male asked:
Dr. Robert Wilson
Addiction Medicine 46 years experience
Yes: Diphenhydramine can cause false positive for opiates and others, results will not confirm on GC/MS.
A 39-year-old female asked:
Dr. Heidi Fowler
Psychiatry 25 years experience
The : The answer dr. Johnson provided is correct. There are reports that with very high doses, Diphenhydramine has in rare cases, led to false positive dru... Read More
A member asked:
Dr. Robert Kwok
Pediatrics 33 years experience
Have a plan to...: Avoid touching, sniffing, smelling, drinking, eating, or going anywhere near any trouble-making substances, for a couple of months before drug testing... Read More
A male asked:
Dr. Erin Robertson
General Practice 19 years experience
Not DOT protocol: Non-"Department of Transportation." http://m.afscme.org/members/ Simply policy differences: more/less stringent, w/ different cut-off levels... Read More